From the FLex Radio Bug Tracker #394, currently running PowerSDR 1.6.3 SVN 620, I did the suggestion of changing:
Delta 44 control panel, Hardware Settings, DMA Buffer Size Latency from 256 to 512 This helped somewhat, but changing it to 1024 reduced the popping/crackling, even in Histogram. In Panadapter, my CPU is < 10%. This brings up the questions What should my PowerSDR Setup Sound Card Buffer Size be (presently 2048)? What should my PowerSDR Setup DSP Buffer Size be (presently 1024)? Mike - AA8K Paul Shaffer wrote: > I sent a support email to flex today about a similar problem, no answer. I > find that with 1.6.1 and 1.6.2 there is an annoying poping sound in the > audio. I think it is related to something in the bitmap refresh code. They > must have changed how the window is redrawn or something. It is most > noticeable when you drag another window over the SDR1000 main window. The > processor counter goes to near 100% on my system. I mostly hear it on AM > reception, I don't know if it happens with wav files. > > In 1.6.0, the redraw might not be as clean as in 1.6.1+, the processor also > goes to near 100%, but there is no audio poping. Perhaps it's a case of > tweaking the UI drawing code, but inadvertently affecting the DSP audio > chain. > > _______________________________________________ FlexRadio mailing list [email protected] http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ FlexRadio Homepage: http://www.flex-radio.com
